Senior Back-End Developer

(This vacancy has been translated from English. The English vacancy text can be found below.)

Are you an experienced back-end developer who enjoys tackling complex logic and creating groundbreaking platforms? Then you might be exactly who we're looking for.

We are busy transforming Elfsquad into the world's smartest CPQ platform—a platform that allows users to design, visualize, and sell custom products directly online, with or without the intervention of engineers.

About the position

We're transforming Elfsquad into the world's smartest CPQ platform. A platform that allows users to design, visualize, and sell custom products directly online, with or without the intervention of engineers.

Under the hood, our logic engine is evolving, and now AI is part of that transformation. As a Senior Back-end Developer, you won't just write high-performance APIs. You'll help architect the core logic that powers configuration intelligence and supports AI-driven automation.

Think smart line processing, guided sales, dynamic pricing, and large-scale optimization. This isn't just a typical back-end function. It's about logic, AI, and architecture coming together to shape the digital working practices of global manufacturers.

Are you an experienced back-end developer looking for more than just another REST API? Then you've come to the right place. You'll design the core of a highly modular CPQ platform that adapts to global use cases. You'll collaborate with a dynamic product team that learns quickly and avoids unnecessary meetings. It's not just about writing high-performance code; it's also about solving puzzles most developers never encounter.

What you will do:

• Design and build scalable, modular logic engines that drive dynamic configuration workflows.
• Implement and maintain complex control systems, including dependencies, constraints, and pricing models.
• Integrate machine learning results directly into configuration, pricing, and optimization processes.
• Develop high-performance APIs that can handle deeply nested models, used by internal teams and external partners.
• Explore application examples such as AI-powered suggestion systems, logic trees for autocomplete, and dynamic feature resolution.

Your stack:

• C# (.NET Core)   – The backbone of our platform.
• Azure SQL/Redis  — data management and fast access
• Event-driven architecture  — for a clean, modular system.
• AI/ML models  (integrated via APIs) — for predictive logic, guided configuration, and more.

Why Elfsquad:

• We solve complex real-world problems with technology that matters.
• You'll work closely with AI engineers, front-end teams, and product owners; there are no separate departments here.
• We work fast, build with purpose and love big ideas.
• The products you will build are widely used by manufacturers around the world.

You:

• Excellent command of C# or a similar high-performance compiled language.
• Has several years (+ 3 years) of experience in developing high-quality software.
• You are skilled in translating complex business logic into clear and maintainable code.
• I am skilled in building APIs that are fast, stable, and loved by front-end developers.
• A proponent of clean architecture, modularity and event-driven systems.
• I have a passion for working closely with product, AI, and design teams.
• Fluent in Dutch and English, both spoken and written.

Bonus points if you:

• Experience integrating AI models (e.g., OpenAI, Azure AI, or your own machine learning models) into existing products.
• Dealt with logical complexity that goes far beyond REST endpoints — and loved it.
• Designed platforms that are scalable and customizable at the customer level.
• Loves teaching and mentoring other developers.

We offer:

• Competitive employment conditions and flexibility  : attractive salary and benefits, with the option to work from home and remotely from abroad.
• Growth and development  : opportunities for career acceleration, supported by tools, training and coaching.
• Impact and responsibility  : take real responsibility and contribute directly to the digital transformation of the manufacturing industry.
• Dynamic and international team  : informal, collaborative environment where successes are celebrated.
• Modern workplace and tools  : a well-equipped office, designed to support creativity and productivity.

About Elfsquad and growth opportunities

Elfsquad develops software for selling technically complex products. Our groundbreaking software guides both customers and salespeople through the configuration and installation of machines. Founded in 2016, Elfsquad is growing rapidly, creating endless opportunities for personal and professional growth. 

For more information, please contact Sofia Cotinghi on  +31 6 437 948 67. 

Are you a senior back-end developer looking to tackle complex logic and shape a transformative platform? Then you might be exactly who we're looking for.

We're mid-flight on transforming Elfsquad into the world's smartest CPQ platform - one that lets users build, visualize, and sell custom products directly online, with or without engineers in the loop.

About the Role

We're in the process of transforming Elfsquad into the world's smartest CPQ platform. One that lets users build, visualize, and sell custom products directly online, with or without engineers involved.

Under the hood, our logic engine is evolving, and now, AI is part of that transformation. As a Senior Back-end Developer, you won't just be writing performant APIs. You'll help architect the core logic that powers configuration intelligence and supports AI-driven automation.

Think smart rule resolution, guided selling, dynamic pricing, and optimization at scale. This isn't a typical back-end job. It's about logic, AI, and architecture coming together to shape how global manufacturers operate digitally.

If you're a senior back-end dev who wants more than another REST API, welcome home. You'll architect the core of a highly modular CPQ platform that adapts to global use cases. You'll also work alongside a fast-moving product squad that learns quickly and avoids unnecessary meetings. This isn't just about writing performant code — it's about solving puzzles that most devs will never encounter.

What You'll Be Doing:

• Design and build scalable, modular logic engines that drive dynamic configuration workflows
• Implement and maintain complex rule systems — dependencies, constraints, pricing models
• Integrate machine learning outputs directly into configuration, pricing, and optimization processes
• Develop performant APIs that handle deeply nested models, used by internal teams and external partners
• Explore use cases like AI-powered suggestion engines, auto-complete logic trees, and dynamic feature resolution

Your Stack:

• C# (.NET Core)  – The backbone of our platform.
• Azure SQL / Redis  — data management and high-speed access
• Event-driven architecture  — for a clean, modular system
• AI/ML models  (integrated via APIs) — for predictive logic, guided configuration, and more

Why Elfsquad:

• We're solving real-world complexity with technology that matters
• You'll work closely with AI engineers, front-end teams, and product owners, no silos here
• We move fast, build with purpose, and love big ideas
• The stuff you'll build is used by manufacturers across the world

You:

• Strong in C#  or a comparable high-performance compiled language.
• Have several years of experience ( + 3 years ) developing high-quality software
• Comfortably translating complex business logic into clean, maintainable code.
• Skilled in building APIs that are fast, stable, and loved by front-end devs.
• A believer in clean architecture, modularity, and event-driven systems.
• Passionate about working closely with product, AI, and design teams
• Are fluent in Dutch and English , verbally and in writing

Bonus points if you:

• Experience integrating AI models (eg, OpenAI, Azure AI, or in-house ML models) into real products
• Deals with logic complexity far beyond REST endpoints — and loved it
• Designed platforms that scale with customer-level customization
• Love teaching and mentoring other developers.

We Offer You

• Competitive compensation & flexibility:  attractive salary and benefits, with the option to work from home and remote from abroad
• Growth & development:  career acceleration opportunities, supported by tools, training, and coaching
• Impact & ownership:  take on real responsibility, directly contributing to the digital transformation of manufacturing
• Vibrant & international team:  informal, collaborative environment where achievements are celebrated
• Modern workplace & tools:  a well-equipped office designed to support creativity and productivity

About Elfsquad and Growth Possibilities

Elfsquad creates software for selling technically complex products. Our groundbreaking software guides both customers and sales through the process of configuring machines and installations. Elfsquad was founded in 2016 and is growing rapidly. Because of this, your opportunities for personal and professional growth are endless.

For more information, you can contact Sofia Cotinghi at phone number +31 6 437 948 67.